JavaScript/jQuery DataGrid - Master-Detail Interface
User Interaction
The master-detail interface supplies a standard data row with an expandable section that contains detail data. In master-detail terms, the data row is called "master row" and the expandable section - "detail section".
The master-detail interface becomes available after you specify the detail sections' contents using the masterDetail.template property. You can expand and collapse detail sections programmatically or enable a user to do it by setting the masterDetail.enabled property to true. Set the masterDetail.autoExpandAll property to true to expand these sections by default.
- $(function() {
- $("#dataGridContainer").dxDataGrid({
- // ...
- masterDetail: {
- enabled: true,
- autoExpandAll: true,
- template: function (container, info) {
- сonst currentEmployeeData = info.data;
- container.append(
- $(`<div class="employeeInfo">
- <img class="employeePhoto" src=${currentEmployeeData.Picture}/>
- <p class="employeeNotes">${currentEmployeeData.Notes}</p>
- </div>`)
- );
- }
- }
- });
- });
Once loaded, a detail section's content remains cached until a user switches to another page in the DataGrid or reloads the web page.
API
Pass -1 to the expandAll(groupIndex) or collapseAll(groupIndex) method to expand or collapse all master rows at once.
- const dataGrid = $("#dataGridContainer").dxDataGrid("instance");
- dataGrid.expandAll(-1);
- dataGrid.collapseAll(-1);
The expandRow(key) and collapseRow(key) methods expand and collapse an individual master row. You can check a row's current state by calling the isRowExpanded(key) method.
- function toggleMasterRow (rowKey) {
- const dataGrid = $("#dataGridContainer").dxDataGrid("instance");
- if (dataGrid.isRowExpanded(rowKey)) {
- dataGrid.collapseRow(rowKey);
- } else {
- dataGrid.expandRow(rowKey);
- }
- }
Events
Events raised for a master row when a user expands or collapses it are identical to the events raised for expanding or collapsing a group. See this topic for details.
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